Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors - Manual (Page 259)

8 Troubleshooting
8.1.2 Troubleshooting of Alarms
8-8
A.051:
Unsupported Device
Alarm
An unsupported serial converter
unit or linear scale is connected to
the SERVOPACK.
Check the product specifications.
Select the correct combination of
units.
A.080:
Linear Scale Pitch
Setting Error
The setting of the linear scale
pitch (Pn282) has not been
changed from the default setting.
Check the value of Pn282. Correct the value of Pn282.
A.0b0:
Cancelled Servo ON
Command Alarm
After executing the utility func-
tion to turn ON the power to the
servomotor, the Servo ON com-
mand was sent from the host con-
troller. −
Turn the SERVOPACK power sup-
ply OFF and then ON.
A.100:
Overcurrent or Heat
Sink Overheated
(An overcurrent flowed
through the IGBT or
heat sink of SERVO-
PACK overheated.)
Incorrect wiring or contact fault
of main circuit cable or motor
main circuit cable.
Check the wiring. Refer to 3.1
Main Circuit Wiring.
Correct the wiring.
Short-circuit or ground fault of
main circuit cable or linear servo-
motor main circuit cable.
Check for short-circuits across the
linear servomotor terminal phase-U,
-V, and -W, or between the ground-
ing and linear servomotor terminal
U, V, or W. Refer to 3.1 Main Cir-
cuit Wiring. Some cables may be damaged.
Replace damaged cables.
Short-circuit or ground fault
inside the linear servomotor.
Check for short-circuits across the
linear servomotor terminal phase-U,
-V, and -W, or between the ground-
ing and linear servomotor terminal
U, V, or W. Refer to 3.1 Main Cir-
cuit Wiring.
The linear servomotor may be
faulty. Replace the linear servomo-
tor.
Short-circuit or ground fault
inside the SERVOPACK.
Check for short-circuits across the
linear servomotor connection termi-
nals U, V, and W on the SERVO-
PACK, or between the grounding
and terminal U, V, or W. Refer to
3.1 Main Circuit Wiring.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Incorrect wiring or contact fault
of the regenerative resistor.
Check the wiring. Refer to 3.7
Regenerative Resistors Connec-
tions.
Correct the wiring.
The dynamic brake (DB: Emer-
gency stop executed from the
SERVOPACK) was frequently
activated, or the DB overload
alarm occurred.
Check the resistor power consump-
tion monitor Un00B to see how
many times the DB has been used.
Or, check the alarm history Fn000
to see if the DB overload alarm
A.730 or A.731 was reported.
Change the SERVOPACK model,
operation conditions, or the mecha-
nism so that the DB does not need
to be used so frequently.
The generated regenerative
energy exceeded the SERVO-
PACK regenerative energy pro-
cessing capacity. Check the regenerative load ratio
monitor Un00A to see how many
times the regenerative resistor has
been used.
Check the operation condition
including overload, and reconsider
the regenerative resistor value.
The SERVOPACK regenerative
resistance is too small.
Check the regenerative load ratio
Un00A to see how many times the
regenerative resistor has been used.
Change the regenerative resistance
value to a value larger than the
SERVOPACK minimum allowable
resistance value.
A heavy load was applied while
the linear servomotor was
stopped or running at low speed. Check to see if the operating condi-
tions are outside servo drive specifi-
cations. Reduce the load applied to the lin-
ear servomotor or increase the oper-
ation speed.
Malfunction caused by noise
interference.
Improve the wiring or installation
environment, such as by reducing
noise, and check to see if the alarm
recurs.
Take countermeasures for noise,
such as correct wiring of the FG.
Use an FG wire size equivalent to
the SERVOPACK main circuit wire
size.
A SERVOPACK fault occurred. −
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Alarm:
Alarm Name
Cause Investigative Actions Corrective Actions